My energy increased after surgery, which was in 2009. I lost 83 pounds, regained 30, and I have now lost 13 of that. I lost the 83 in 5 months and then just quit losing. I still have a lot more energy than when I was at my heaviest. My sleeve is my tool and I am using it now to start losing again. Im healthier now than anytime since about 1990. I'm 63 and I can do things that my friends can't, like work out at the gym for an hour or go on an all day shopping trip. I love my sleeve and have no regrets